EP 0412749 B1 19960417 - Magnetic resonance probes
Title (en)
Magnetic resonance probes
Title (de)
Magnetische Resonanz-Sonden
Title (fr)
Sondes de résonance magnétique
Publication
Application
Priority
US 39265389 A 19890811
Abstract (en)
[origin: EP0412749A2] In a magnetic resonance apparatus a patient is subjected to radio frequency signals and the magnetic resonance signals from the patient produced in response to the radio frequency signals are received by a patient head probe (22). The head probe includes an upper probe portion (60) and a lower probe portion (62) which are selectively separable. The upper probe portion has a window (66) of about 90 DEG at the top so the patient can see out easily and feel less claustrophobic. The upper and lower probe portions each include two coil sections (50, 52; 54, 56) connected in series. The coil sections include a plurality of conductor branches (40) connected in parallel around a cylinder. The position of the conductor branches is arbitrarily selected to accommodate the patient window and the like. From the Biot-Savart Law, the current flow through each of the conductor branches is determined. Capacitors C1, . . .,Cn are connected into the current branches such that actual current flow I0, I1, . . ., In through each branch substantially meets the currents specified by the Biot-Savart Law.
IPC 1-7
IPC 8 full level
G01R 33/32 (2006.01); A61B 5/055 (2006.01); G01R 33/34 (2006.01); G01R 33/341 (2006.01); G01R 33/36 (2006.01)
CPC (source: EP US)
G01R 33/34046 (2013.01 - EP US); G01R 33/34069 (2013.01 - EP US); G01R 33/341 (2013.01 - EP US); G01R 33/3628 (2013.01 - EP US); G01R 33/34007 (2013.01 - EP US); G01R 33/34084 (2013.01 - EP US); G01R 33/5659 (2013.01 - EP US)
Citation (examination)
- EP 0389868 A1 19901003 - SIEMENS AG [DE]
- EP 0180121 A2 19860507 - GEN ELECTRIC [US]
- EP 0173363 A1 19860305 - PHILIPS NV [NL]
- J.Magn.Reson. 63 (1985) pages 622-628
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0412749 A2 19910213; EP 0412749 A3 19910918; EP 0412749 B1 19960417; DE 69026552 D1 19960523; DE 69026552 T2 19961031; JP 2909600 B2 19990623; JP H03149033 A 19910625; US 5045792 A 19910903
DOCDB simple family (application)
EP 90308619 A 19900806; DE 69026552 T 19900806; JP 21146290 A 19900808; US 39265389 A 19890811